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This commit is contained in:
Victor Zverovich 2022-02-08 06:28:22 -08:00
parent afbcf1e8ea
commit ecd6022c24
1 changed files with 3 additions and 3 deletions
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6
doc/api.rst
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@ -227,7 +227,7 @@ template and implement ``parse`` and ``format`` methods::
// Formats the point p using the parsed format specification (presentation)
// stored in this formatter.
template <typename FormatContext>
auto format(const point& p, FormatContext& ctx) -> decltype(ctx.out()) {
auto format(const point& p, FormatContext& ctx) const -> decltype(ctx.out()) {
// ctx.out() is an output iterator to write to.
return presentation == 'f'
? format_to(ctx.out(), "({:.1f}, {:.1f})", p.x, p.y)
@ -249,7 +249,7 @@ example::
template <> struct fmt::formatter<color>: formatter<string_view> {
// parse is inherited from formatter<string_view>.
template <typename FormatContext>
auto format(color c, FormatContext& ctx) {
auto format(color c, FormatContext& ctx) const {
string_view name = "unknown";
switch (c) {
case color::red: name = "red"; break;
@ -287,7 +287,7 @@ You can also write a formatter for a hierarchy of classes::
struct fmt::formatter<T, std::enable_if_t<std::is_base_of<A, T>::value, char>> :
fmt::formatter<std::string> {
template <typename FormatCtx>
auto format(const A& a, FormatCtx& ctx) {
auto format(const A& a, FormatCtx& ctx) const {
return fmt::formatter<std::string>::format(a.name(), ctx);
}
};